The driving force governing room temperature grain coarsening in thin gold films

被引：16
|
作者：
Glushko, O. [1 ]
Cordill, M. J. [1 ,2 ]
机构：
[1] Austrian Acad Sci, Erich Schmid Inst Mat Sci, Jahnstr 12, A-8700 Leoben, Austria
[2] Univ Leoben, Dept Mat Phys, Jahnstr 12, A-8700 Leoben, Austria
来源：
SCRIPTA MATERIALIA | 2017年 / 130卷
基金：
奥地利科学基金会;
关键词：
Grain coarsening; Room temperature; Driving force; Yield stress; Texture; BOUNDARY MIGRATION; TENSILE BEHAVIOR; GROWTH; MOTION; DEFORMATION; KINETICS; AL; CU;
D O I：
10.1016/j.scriptamat.2016.11.012
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Strong room-temperature grain coarsening in gold films on polyimide induced by cyclic uniaxial mechanical strain is demonstrated. Detailed electron backscatter diffraction analysis revealed that, in contrast to the predictions of shear-coupled grain boundary migration model, the grain coarsening is isotropic and coarsened grains do not exhibit any specific crystallographic orientations or misorientations to the neighboring grains. It is shown that a thermodynamic model where the driving force appears due to the difference in yield stresses between the grains with different sizes provides an adequate explanation of the experimental data. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：42 / 45
页数：4
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